Philips SPENDEX 40 Maintenance Manual page 37

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NATO CONFIDENTIAL
S P E N D E X 4 0 U A 8 2 5 1 / 0 0 A N D / O l L I M I T E D M A I N T E N A N C E M A N U A L
5 . 1 3 L i n e i n t e r f a c e b o a r d ( s e e F i g . 5 . 5 )
5 . 1 3 . 1 S e t t i n g b l o c k S I
With the help of a jumper on setting block SI the receiving side of
the internal modem can be permanently switched on the line.
■
Option
Position of jumper
Receiving side modem permanently on line
Receiving side modem not permanently on line
1-2
2-3
5 . 1 3 . 2 S e t t i n g b l o c k S 2
With the aid of a jumper on setting block S2 the MODAB signal can be
made permanently high or low. When the jumper is not inserted, the
signal is activated by the comsec controller.
■
■
Option
Position of jumper
MODAB permanently high
MODAB permanently low
Activate MODAB via
comsec controller
1-2
2-3
not inserted
■
5 . 1 3 . 3 S e t t i n g b l o c k S 3
By means of a jumper on setting block S3 the signal S2100 can be made
high or low.
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Option
Position of jumper
S2100 high
S2100 low
1-2
2-3
9922 154 13431
5-6
NATO CONFIDENTIAL